<!doctype html><metacharset=utf-8><title>Control charcters must be visible: U+0016</title><linkrel=authortitle="Florian Rivoal"href="https://florian.rivoal.net"><linkrel=helphref="https://drafts.csswg.org/css-text-3/#white-space-processing"><linkrel=mismatchhref="reference/control-chars-000-ref.html"><metaname=flagscontent=""><metaname=assertcontent="U+0016, which is in the unicode category CC, must be visible"><style>div{font-size:4em;}div::after{content:"\0016"}/* Injecting via CSS, to avoid any mangling by the html parser */</style><p>Test passes if there is a visible character below.<div></div>